PyGame获取精灵组

如何解决PyGame获取精灵组

| 大家好，尝试使用pygame构建pacman时遇到了一个小问题。如果我按一个键，吃豆人就在移动，那么它会改变方向，但不幸的是，如果上面有一堵墙，那么吃豆人会停在那个地方并向上指，直到我改变方向。我需要有关如何找出pacman.rect.y的块3或4单元是否属于具有所有墙和材质的精灵组级别的帮助。     

解决方法

这是带有墙的有效游戏的更长的示例：

# Sample Python/Pygame Programs
# Simpson College Computer Science
# http://cs.simpson.edu/?q=python_pygame_examples

import pygame

black = (0,0)
white = (255,255,255)
blue = (0,255)

# This class represents the bar at the bottom that the player controls
class Wall(pygame.sprite.Sprite):
    # Constructor function
    def __init__(self,x,y,width,height):
        # Call the parent\'s constructor
        pygame.sprite.Sprite.__init__(self)

        # Make a blue wall,of the size specified in the parameters
        self.image = pygame.Surface([width,height])
        self.image.fill(blue)

        # Make our top-left corner the passed-in location.
        self.rect = self.image.get_rect()
        self.rect.top = y
        self.rect.left = x


# This class represents the bar at the bottom that the player controls
class Player(pygame.sprite.Sprite):

    # Set speed vector
    change_x=0
    change_y=0

    # Constructor function
    def __init__(self,y):
        # Call the parent\'s constructor
        pygame.sprite.Sprite.__init__(self)

        # Set height,width
        self.image = pygame.Surface([15,15])
        self.image.fill(white)

        # Make our top-left corner the passed-in location.
        self.rect = self.image.get_rect()
        self.rect.top = y
        self.rect.left = x

    # Change the speed of the player
    def changespeed(self,y):
        self.change_x+=x
        self.change_y+=y

    # Find a new position for the player
    def update(self,walls):
        # Get the old position,in case we need to go back to it
        old_x=self.rect.left
        new_x=old_x+self.change_x
        self.rect.left = new_x

        # Did this update cause us to hit a wall?
        collide = pygame.sprite.spritecollide(self,walls,False)
        if collide:
            # Whoops,hit a wall. Go back to the old position
            self.rect.left=old_x

        old_y=self.rect.top
        new_y=old_y+self.change_y
        self.rect.top = new_y

        # Did this update cause us to hit a wall?
        collide = pygame.sprite.spritecollide(self,hit a wall. Go back to the old position
            self.rect.top=old_y


score = 0
# Call this function so the Pygame library can initialize itself
pygame.init()

# Create an 800x600 sized screen
screen = pygame.display.set_mode([800,600])

# Set the title of the window
pygame.display.set_caption(\'Test\')

# Create a surface we can draw on
background = pygame.Surface(screen.get_size())

# Used for converting color maps and such
background = background.convert()

# Fill the screen with a black background
background.fill(black)

# Create the player paddle object
player = Player( 50,50 )
movingsprites = pygame.sprite.RenderPlain()
movingsprites.add(player)

# Make the walls. (x_pos,y_pos,height)
wall_list=pygame.sprite.RenderPlain()
wall=Wall(0,10,600)
wall_list.add(wall)
wall=Wall(10,790,10)
wall_list.add(wall)
wall=Wall(10,200,100,10)
wall_list.add(wall)

clock = pygame.time.Clock()

done = False

while done == False:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done=True

        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                player.changespeed(-3,0)
            if event.key == pygame.K_RIGHT:
                player.changespeed(3,0)
            if event.key == pygame.K_UP:
                player.changespeed(0,-3)
            if event.key == pygame.K_DOWN:
                player.changespeed(0,3)

        if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                player.changespeed(3,0)
            if event.key == pygame.K_RIGHT:
                player.changespeed(-3,3)
            if event.key == pygame.K_DOWN:
                player.changespeed(0,-3)

    player.update(wall_list)

    screen.fill(black)

    movingsprites.draw(screen)
    wall_list.draw(screen)
    pygame.display.flip()

    clock.tick(40)

pygame.quit()

    ,您可以使用： http://www.pygame.org/docs/ref/sprite.html#pygame.sprite.spritecollide

pacman.rect.y = pacman.rect.y - 3  
colliding = pygame.sprite.spritecollide(pacman,level)  
if colliding:
   can_move_upwards = False
else:
   can_move_upwards = True
pacman.rect.y = pacman.rect.y + 3

并对您要测试的每个方向执行相同的操作。